Cambridge By-law 26-021, s. 7.2(a) — Property Standards By-law

Despite any other provisions in this by-law, where a Character-Defining Element of a Protected Heritage Property can be repaired, the Character - Defining Element shall not be replaced and shall be repaired as follows:

• in a manner that minimizes damage to the Character-Defining Element;
• (b) in a manner that maintains the design, colour, texture, grain, materials or other distinctive feature of the Character-Defining Element; The Corporation of the City of Cambridge By-law Number 26-021
• (c) using the same material as the original and in keeping with the design, colour, texture, grain, and any other distinctive features of the original; and
• (d) where the same types of materials as the original are no longer available, using approved alternative materials that replicate the design, colour, texture, grain or other distinctive feature, and appearance of the original material. Replacement of Character-Defining Elements